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Round|Natural|IGI

1.03ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 320829434

Shape and cutting style on the report: Round brilliant

Certificate IGI 320829434

Diamond specifications and retailer prices

From $1,886 AUD
As of November 5, 2026
Save $3,076 AUD (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,961 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural round diamond

This 1.03ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 320829434. Listed at 16 retailers as of November 5, 2026, with prices from $1,886 to $4,961, a $3,076 spread on the same certified stone. NZ Jewellers lists it at $4,961. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.03
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.3°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 320829434
Dimensions6.49 × 6.51 × 3.97 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.49 mm6.51 mm1.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 320829434
Side View
Table 58.5%Crown 34.3°Girdle: Med.Pavilion 40.8°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,918 AUD|Low: $1,917 AUD|High: $3,770 AUD|Avg: $2,756 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$1,918 AUD
Retailer 2$2,270 AUD
Retailer 4$2,481 AUD
Retailer 7$2,783 AUD
Retailer 3$2,816 AUD
Retailer 6$2,821 AUD
Retailer 8$3,313 AUD
Retailer 5$3,714 AUD

34 data points across 8 retailers

16 retailers$1,886 AUD to $4,961 AUD

A
Cheapest Retailer
-
$1,886 AUD
A
Retailer 2
-
$1,918 AUD
View
A
Retailer 3
-
$2,034 AUD
View
A
Retailer 4
-
$2,127 AUD
View
A
Retailer 5
-
$2,178 AUD
View
A
Retailer 6
-
$2,227 AUD
View
A
Retailer 7
-
$2,270 AUD
View
B+
Retailer 8
-
$2,347 AUD
View
B+
Retailer 9
-
$2,481 AUD
View
B+
Retailer 10
-
$2,783 AUD
View
B+
Retailer 11
-
$2,816 AUD
View
B+
Retailer 12
-
$2,821 AUD
View
B+
Retailer 13
-
$3,313 AUD
View
B
Retailer 14
-
$3,404 AUD
View
B
Retailer 15
-
$3,714 AUD
View
Most Expensive
B
NZ Jewellers
d73b867d-c73d-4f10-9083-f3f8b6bc4ade · Nov 5
$4,961 AUD
$3,473 USD
View
15 more retailers have this diamond
Prices start from $1,886 AUDSave up to $3,076 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.03ct Round
$1,886 AUD